Image Details
Caption: Figure 11.
The 10 petals are structurally connected at their noses by Front and Rear Cap Rings. Captive shims at the Front Cap Ring are selected to equalize the as-installed heights of the 10 petals. During assembly, long custom screwdrivers are guided in from the rear of the focal plate along a removable central tube. Installation and removal of the Rear Cap Ring stack are facilitated by a special captivator that rides on this central tube. There is a ø 16 mm center hole, behind which lies an M22 × 1.5 mounting thread.
© 2022. The Author(s). Published by the American Astronomical Society.